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Author: ankurmoh

LC_1.cpp

@@ -0,0 +1,19 @@
+class Solution {
+public:
+    vector<int> twoSum(vector<int>& nums, int target) {
+        unordered_map<int,int>mp;
+        vector<int>v;
+        int i,len=nums.size();
+        for(i=0;i<len;i++)
+        {
+            if(mp.find(target-nums[i])!=mp.end())
+            {
+                v.push_back(mp[target-nums[i]]);
+                v.push_back(i);
+                return v;
+            }
+            mp[nums[i]]=i;
+        }
+        return v;
+    }
+};

LC_1018.cpp

@@ -0,0 +1,22 @@
+class Solution {
+public:
+    vector<bool> prefixesDivBy5(vector<int>& A) {
+        vector<bool>res;
+        if(A.size()==0)
+            return res;
+        long long int i,sz=A.size(),val=A[0],con=0;
+        if(val%5==0)
+            res.push_back(true);
+        else
+            res.push_back(false);
+        for(i=1;i<sz;i++)
+        {
+            val = (2*val + A[i])%5;
+            if(val==0)
+            res.push_back(true);
+        else
+            res.push_back(false);
+        }
+        return res;
+    }
+};